[wasm] Prepare WasmCompilationUnit for lazy compilation

test/cctest/wasm/wasm-run-utils.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WASM_RUN_UTILS_H
 #define WASM_RUN_UTILS_H
 
 #include <setjmp.h>
 #include <stdint.h>
 #include <stdlib.h>
@@ skipping 591 matching lines @@
     // Get a new function from the testing module.
     int index = module->AddFunction(sig, Handle<Code>::null(), name);
     function_ = testing_module_->GetFunctionAt(index);
   }
 
   Handle<Code> Compile() {
     CallDescriptor* desc = descriptor();
     if (kPointerSize == 4) {
       desc = testing_module_->GetI32WasmCallDescriptor(this->zone(), desc);
     }
-    CompilationInfo info(CStrVector("wasm"), this->isolate(), this->zone(),
+    EmbeddedVector<char, 16> comp_name;
+    int comp_name_len = SNPrintF(comp_name, "wasm#%u", this->function_index());
+    comp_name.Truncate(comp_name_len);
+    CompilationInfo info(comp_name, this->isolate(), this->zone(),
                          Code::ComputeFlags(Code::WASM_FUNCTION));
     std::unique_ptr<CompilationJob> job(Pipeline::NewWasmCompilationJob(
         &info, &jsgraph, desc, &source_position_table_, nullptr, false));
     if (job->ExecuteJob() != CompilationJob::SUCCEEDED ||
         job->FinalizeJob() != CompilationJob::SUCCEEDED)
       return Handle<Code>::null();
 
     Handle<Code> code = info.code();
 
     // Deopt data holds <WeakCell<wasm_instance>, func_index>.
@@ skipping 212 matching lines @@
   void RunWasm_##name(WasmExecutionMode execution_mode)
 
 #define WASM_EXEC_COMPILED_TEST(name)                                \
   void RunWasm_##name(WasmExecutionMode execution_mode);             \
   TEST(RunWasmCompiled_##name) { RunWasm_##name(kExecuteCompiled); } \
   void RunWasm_##name(WasmExecutionMode execution_mode)
 
 }  // namespace
 
 #endif